I nodded and she lifted her hand and then moved down and lifted my legs up onto the bed so I was lying on it properly. She knelt on the bed beside me and took my raging cock in her right hand and then slowly pulled back my foreskin revealing my glistening helmet. She leant over and gently kissed it with open lips. She turned her head slightly to look at me and smile before opening her mouth, sticking out her tongue and then engulfing my cock. I groaned loudly as she started sucking me and bobbing her head up and down. I could feel her soft hair caressing my groin area as she sucked and slurped with a passion.
"mmm...mmmm..mmmm" she moaned in time with her pumping head.
"Whoa fuck sis easy I could blow!!" I warned her as I felt my state of excitement shift up a couple of gears. She lifted her head from my cock and with an almost snarling look on her face she threw herself onto me and pinned my shoulders down with her hands and straddled me. I could feel her wet pussy on my belly and she squeezed my body between her thighs all the time leaning over me with a look of shear lust on her face that was almost frightening. She leant down and kissed me hard. Shoving her tongue into my mouth again deeply and wildly. It felt as if I was drowning in her saliva drenched mouth as it out fought mine. I could only relent to her passionate attack. She suddenly sat up and with her right hand grabbed my cock and positioned herself over it. We said nothing as she expertly guided my cock to her waiting cunt and then forced herself down onto me while I forced my cock up. Feeling it slide all the way into her in a single exquisite movement.
She sat there on me a moment panting slightly. I reached up and grabbed her tits and squeezed them firmly but she pulled my hands away and leaning forward again she pinned me down. Her tits hung down and gently brushed my chest and she started fucking me hard. Humping her large 50 year old body up and down on me with a force and pace that surprised me.
We said nothing as we fucked like this for a few moments with the bed making all kind of sounds of protest. Her pace never relented and her ferocity only increased. She lifted her head up a little and her mouth hung open.
"uuh..uh..uh..uh..." she grunted. "Ah ....ah ..ah.ah.ah" her pace quickened which I wouldn't have thought possible. She started making slight squealing noises from her throat and then saliva started dribbling from her mouth copiously. It landed in a long gooey strand on my face and I opened my mouth to welcome it. She noticed this and grinned.
"You ..dirty.. little... brother? " she asked still humping away.
"Fuck yeah!" I answered panting as I met her thrusts with my own. Banging our groins together so hard that we were making wet smacking noises. "I'll do whatever you want sis. Whatever you say" I gasped.
Suddenly Sandy stopped and I felt her full weight rest on me. She sat there on me panting and sweating. "Tim... eat my.. cunt!" she said regaining her breath. And then flopped down beside me on the bed and spread her legs. "NOW!" she cried out.
I quickly sat up and then got into position between her legs. Her pussy was swollen and wet. I leant forward and kissed her cunt with my open mouth and sank my tongue into her. The smell and taste of her intensified my arousal and I started eating into her furiously. Munching at her hard and then finding and attacking her swollen clit with my tongue.
"Oh fuck Tim yes..yes..." she sighed and then said something that surprised me a little. "Stick your finger up my bum Tim! Go on!"
I did what I was asked and while still eating her pussy I wetted my right index finger in her cunt juices and probed for her anus. I found it quickly and gently pushed into her. I felt her sphincter give way and my finger slide into her hot hole. My mouth and tongue were tiring now so I sat up but kept my finger in her ass.
"69!" Sandy cried and pulled at me to get over her. While still keeping my finger in her ass I positioned myself over my big sister's face and lowered my dripping cock all the way into her open mouth. My balls resting on her nose. I then lowered my face back into her cunt and began slurping, sucking and munching at it once more while thrusting my finger in and out of her asshole.
Sandy was sucking my cock and I could feel her fingers wrap around it and start wanking me as she did. Things were getting to the point of no return when I suddenly felt a finger probe my own asshole. With a wiggle she pushed her finger into my hole with force that although slightly painful was enough to send me to a new level of ecstasy I had never felt. Here I was on top of my gorgeous older sister with my mouth in her cunt, my cock in her mouth and we both had our fingers up each other's ass holes.
It was too much. I felt my orgasm coming and suddenly my whole body went into a convulsion. I cried out and started smacking my face hard against her cunt while at the same time thrusting my cock in and out of her mouth hard and fast without a care as to whether she could take it. But take it she did. She just rammed her finger harder into my hole and went with my thrusts keeping her mouth puckered. I could feel her own body suddenly convulse too and she tried to scream out but my cock muffled her cry. I then finally felt my moment and froze as I exploded into her mouth and I cried out into her cunt. I felt spurt after spurt empty into my sister's mouth still fingering her asshole as she kept fingering mine which only served to prolong my orgasm into probably the longest and most intense orgasm of my life.
Eventually I was spent and then fell over to one side letting my finger slide out of her hole and feeling her finger slide from my own and my cock from her mouth. She was breathing heavily through her nose and sat up quickly. I looked up at her and she leant over me and then spat out everything I'd just given her all over her tits. Before I could react she leant in closer and dropped her tits onto my face and brushed them back and forth smearing the mess. I kissed and licked at her tits as she did so and Sandy giggled.
"Well you are a dirty little brother aren't you?" she remarked playfully.
"Yeah." I answered. "You know we shoulda done this years ago!" I said smiling with my cum now smeared all over my face.
"Well we can make up for lost time can't we?" she answered and kissed me long and deeply. She broke off, laid beside me and put her arm across my chest and her right leg over me so her thigh rest on my limp cock. "I love you Tim you're my little brother. But damn it I've never felt so dirty and turned on in my life I don't give a fuck how wrong this is anymore!"
"Same here sis. Same here" I replied and caressed her hair.
"You want to make this a regular thing Tim?" she asked. " I know it's incest and everything and we are pretty sick doing what we've done but fuck it. It's so fucking dirty it's too much fun!"
"Yeah! It is." I answered. "I'm up for whatever you want sis. Whatever you want."
"Really?" she said with a naughty look on her face. "What if I wanted to try some pretty kinky stuff like what you watch on those porn sites?
"Like I said Sandy. Whatever you want." I replied with a grin and kissed her full on the lips.